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Triangular profiled polyester fiber HOY filament and preparation method thereof

A polyester fiber and special-shaped technology, applied in the field of polyester fiber, can solve the problems of poor product shape retention, weakening extrusion expansion ratio, reducing export expansion, etc., achieving good shape retention effect and reducing extrusion expansion. ratio, the effect of reducing export expansion

Active Publication Date: 2017-06-13
JIANGSU HENGKE ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem that the extrusion expansion ratio is too large and the shape retention effect of the product is not good during the existing polyester fiber melt spinning, and provide a kind of triangular special-shaped polyester fiber HOY yarn and its preparation method. The saturated fatty acid metal salt is added to the spinning melt, which is equivalent to adding a lubricant, which can effectively reduce the post-filtration pressure during spinning, thereby effectively reducing the outlet expansion, that is, weakening the extrusion swell ratio, so that the product has a good Shape-retaining effect; at the same time, saturated fatty acid metal salt can also be used as a nucleating agent to promote the crystallization of polyester fiber, increase the curing speed of the fiber, and further improve the shape-retaining effect of the fiber; in addition, the structural regularity of saturated fatty acid metal salt polyester fiber does not have a big effect Destruction, maintaining the excellent performance of polyester fiber, its refractive index is 1.49 less than that of polyester 1.52-1.54, and has no effect on the final transparency of the product

Method used

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  • Triangular profiled polyester fiber HOY filament and preparation method thereof
  • Triangular profiled polyester fiber HOY filament and preparation method thereof
  • Triangular profiled polyester fiber HOY filament and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A preparation method of triangular shaped polyester fiber HOY yarn. The spinning melt is measured, extruded, cooled, oiled and wound to obtain polyester fiber HOY yarn;

[0041] Firstly, a spinning melt is prepared. The monomers of terephthalic acid and ethylene glycol are prepared into a slurry, wherein the molar ratio of terephthalic acid and ethylene glycol is 1:1.2, and then the catalyst, stabilizer and saturated fatty acid are added. After the metal salt is uniformly mixed, the esterification reaction is carried out. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurization pressure is normal pressure. The temperature of the esterification reaction is 250°C. When the amount of water distilled in the esterification reaction reaches the theoretical level 90% of the value is the end point of the esterification reaction; then after the end of the esterification reaction, the polycondensation reaction in the low vacuum stage starts under negati...

Embodiment 2

[0055] A preparation method of triangular shaped polyester fiber HOY yarn. The spinning melt is measured, extruded, cooled, oiled and wound to obtain polyester fiber HOY yarn;

[0056] Firstly, a spinning melt is prepared. The monomers of terephthalic acid and ethylene glycol are prepared into a slurry, wherein the molar ratio of terephthalic acid and ethylene glycol is 1:2.0, and then the catalyst, stabilizer and saturated fatty acid are added. After the metal salt is evenly mixed, the esterification reaction is carried out. The esterification reaction is pressurized in a nitrogen atmosphere, the pressure is 0.3MPa, and the temperature of the esterification reaction is 260°C. When the amount of water distilled in the esterification reaction reaches the theoretical level 90% of the value is the end point of the esterification reaction; then after the end of the esterification reaction, the polycondensation reaction in the low vacuum stage starts under negative pressure. The pressu...

Embodiment 3

[0069] A preparation method of triangular shaped polyester fiber HOY yarn. The spinning melt is measured, extruded, cooled, oiled and wound to obtain polyester fiber HOY yarn;

[0070] Firstly, a spinning melt is prepared. The monomers of terephthalic acid and ethylene glycol are prepared into a slurry, wherein the molar ratio of terephthalic acid and ethylene glycol is 1:1.6, and then the catalyst, stabilizer and saturated fatty acid are added. After the metal salt is evenly mixed, the esterification reaction is carried out. The esterification reaction is pressurized in a nitrogen atmosphere. The pressure is 0.2MPa, and the temperature of the esterification reaction is 255°C. When the amount of water distilled in the esterification reaction reaches the theoretical level 90% of the value is the end point of the esterification reaction; then after the end of the esterification reaction, the polycondensation reaction in the low vacuum stage starts under negative pressure. The pressu...

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Abstract

The invention relates to a triangular profiled polyester fiber HOY filament and a preparation method thereof. A spinning melt includes saturated fatty acid metal salt and polyester in the mass ratio of (0.0005.0.002):1; the pressure after filtering at a spinning moment is 85.125kg / cm<2>; a die swell ratio of the spinning melt is 1.20.1.32; the saturated fatty acid metal salt is the metal salt with the carbon number of 12.22, the melting point at 100-180 DEG C and dynamic viscosity less than or equal to 1Pa.s. According to the invention, the saturated fatty acid metal salt is added into the spinning melt, and equivalently, a lubricating agent is added, so that the pressure after filtering at the spinning moment is effectively reduced, the outlet expansion is effectively reduced and the product has an excellent shape-preserving effect; and meanwhile, the saturated fatty acid metal salt also can be used as a nucleating agent; the curing speed of the fiber can be increased; the shape-preserving effect of the fiber is further improved.

Description

Technical field [0001] The invention belongs to the field of polyester fibers, and specifically relates to a triangular shaped polyester fiber HOY yarn and a preparation method thereof. Background technique [0002] Since its inception, polyethylene terephthalate (PET fiber or polyester fiber) fiber has high breaking strength and elastic modulus, moderate resilience, excellent heat setting, good heat and light resistance, acid and alkali resistance, and corrosion resistance. It has a series of excellent properties such as durability, and the fabric has the advantages of anti-wrinkle, non-ironing, and good crispness. It is widely used in clothing, home textiles and other fields. Among them, polar fleece is a polyester fiber knitted fabric. It is not easy to shed hair, has good loose elasticity, fluffy fabric, is light and warm, and feels soft and comfortable. It is by far the most popular fleece product in the outdoor sports market. bright future. HOY is a highly oriented fiber ...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10C08G63/183C08G63/78D01D5/253D01D1/00D01D5/08
CPCC08G63/183C08G63/78D01D1/00D01D5/08D01D5/253D01F1/10D01F6/92
Inventor 王永锋柳敦雷王峰
Owner JIANGSU HENGKE ADVANCED MATERIALS CO LTD
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